Sharding for Mere MortalsMongoDB AustinAntonio RosalesFebruary 15, 2013

● I got some ideas.

● I have heard there are some great tools to use.

● How can I deploy with limited:○ time and knowledge?

Deploying Your App

Lots to Read

https://juju.ubuntu.com/

Wake Up

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Eat

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Work

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Family

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Family

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Sleep

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Normal Day

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Or . .

Game

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Watch

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Make a Discovery

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Train for the Olympics

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Be a Ninja

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Drink Beer(s)

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Sleep

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Repeat

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Still Haven't Read

https://juju.ubuntu.com/

Time

Not enough unless you have . . .

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Delorean Time Machine

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Wormhole

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Time Turner

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Star Gate

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Brain Envy

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Your brainMy brain

How Can I configure, deploy, scale?

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● Distills DevOps knowledge into Charms○ Repeatable, Scalable, Relatable, Sharable

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Deploy over 100 Charms

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0 to Deployed

● Install Juju○ sudo apt-get-repository ppa:juju/pkgs

○ sudo apt-get update && sudo apt-get install juju

● Configure environments.yaml for interested cloud○ juju bootstrap

○ ~/.juju/environments.yaml

● Deploy

○ juju deploy node-app my app

○ juju deploy mongodb

○ juju add-relation mongodb mayapp

○ juju expose myapp

Taking It Further

● Scale

○ juju add-unit -n 10 myapp

● Add load balancing○ juju deploy haproxy

○ juju add-relation myapp haproxy

● Add Monitoring○ juju deploy nagios

○ juju add-relation myapp nagios

GUI

Sharding Example

Bootstrap the environmentjuju bootstrap

Mongo Shelljuju deploy mongodb mongos

Config Servers ( we'll deploy 3 of them )juju deploy mongodb configsvr --config ~/mongodb-shard.yaml -n3

Shards ( We'll deploy three replica-sets )juju deploy mongodb shard1 --config ~/mongodb-shard.yaml -n3juju deploy mongodb shard2 --config ~/mongodb-shard.yaml -n3juju deploy mongodb shard3 --config ~/mongodb-shard.yaml -n3

Connect the Config Servers to the Mongo shell (mongos)juju add-relation mongos:mongos-cfg configsvr:configsvr

Connect each Shard to the Mongo shell (mongos)juju add-relation mongos:mongos shard1:databasejuju add-relation mongos:mongos shard2:databasejuju add-relation mongos:mongos shard3:database

Sharding Example

● Verify your config servers○ juju expose configsvr

○ juju status configsvr

○ Open your browser to http://<public-address-of-configsvr:28017

● Verify that each shard○ juju expose <shard1|shard2|shard3>

○ juju status <shard1|shard2|shard3>

○ Open your browser to http://<public-address-of-shard>:28017

● Verify that each shard has been successfully register with the cluster:○ juju expose mongos

○ juju status mongos

○ mongo --host <public-address-of-mongos>:27021

○ Once connected:■ sh.status()

Sharding Example

● sh.status should return:

mongos> sh.status()

--- Sharding Status ---

sharding version: { "_id" : 1, "version" : 3 }

shards:

{ "_id" : "shard1", "host" : "shard1/ec2-184-169-236-25.us-west-1.compute.amazonaws.com:27017,ec2-54-241-89-206.us-west-1.compute.amazonaws.com:27017,ip-10-170-173-51:27017" }

{ "_id" : "shard2", "host" : "shard2/ec2-204-236-159-194.us-west-1.compute.amazonaws.com:27017,ip-10-170-22-104:27017" }

{ "_id" : "shard3", "host" : "shard3/ec2-184-169-219-11.us-west-1.compute.amazonaws.com:27017,ec2-184-169-239-214.us-west-1.compute.amazonaws.com:27017,ip-10-170-215-20:27017" }

databases:

{ "_id" : "admin", "partitioned" : false, "primary" : "config" }

mongos>

Get Involved

● juju@lists.ubuntu.com● #juju on IRC Freenode● juju.ubuntu.com

● Interested in Charming:○ Embed best practice into charms

Thanks!MongoDB Austinantonio.rosales@canonical.com